MCQ on Electrophoresis

Biophysics MCQ

Electrophoresis is a laboratory technique used to separate charged molecules, such as DNA, RNA, and proteins, based on their size …

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ICMR JRF Entrance Exam: 2015: Life Sciences: Notification

Notification of CSIR JRF NET, Life Science Examination

ICMR (Indian Council of Medical Research) in collaboration with PGIMER, Chandigarh will conduct a national level examination for the award of JRF (Junior Research Fellowship) in Life Sciences/Social Sciences stream on Sunday, July 19 2015 (19/07/2015) at 12 selected centers all over India (Bhopal, Bhubaneswar, Chandigarh, Chennai, Delhi, Kolkata, Mumbai, Hyderabad, Guwahati, Srinagar, Bengaluru and Varanasi).

A total of 150 Fellowships would be awarded among which 120 Fellowships would be awarded for work in the field of bio-medical sciences with emphasis on Life Sciences (microbiology, physiology, molecular biology, genetics, human biology, bioinformatics, biotechnology, biochemistry, biophysics, immunology, Pharmacology, zoology, Environment Science, botany, veterinary sciences, bio-informatics etc.). Thirty Fellowships would be awarded for work with emphasis on Social sciences like psychology, sociology, home science, statistics, anthropology, social work and Health Economics.

Another 100 candidates will be selected for consideration for positions of JRF under various research schemes of ICMR for the duration of that scheme. These JRFs would also be permitted to complete Ph.D. while working in the scheme, if enrolled.  The validity of result will be two years for placement in ICMR funded projects.

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CSIR UGC JRF NET June 2015, Notification: For Junior Research Fellowship (JRF) & Eligibility for Lectureship (NET)

easybiologyclass, csir jrf net life sciences


CSIR JRF NET Life Sciences June 2015 Notification

CSIR will hold the Joint CSIR-UGC Test Tentatively on 21st June, 2015 for determining the eligibility of the Indian National candidates for the award of Junior Research Fellowships (JRF) NET and for determining eligibility for appointment of Lecturers (NET) in certain subject areas falling under the faculty of Science & Technology. The award of Junior Research Fellowship (NET) to the successful eligible candidates will depend on their finding admission/placement in a university/ national laboratory/ institution of higher learning and research, as applicable.

A candidate may apply either for ‘JRF’ or for ‘Lectureship’ (LS) only. He/she may indicate his/her preference in the Online Application, as the case may be. CSIR may consider candidates for ‘JRF’, or ‘Lectureship only” depending on number of fellowships available & performance in the test subject to the condition that they fulfill the laid down eligibility criterion. If a candidate is found to be over-age for JRF (NET) he/she will automatically be considered for Lectureship (NET) only, except for Engineering Sciences.

Engineering Sciences candidates will only be eligible for CSIR JRF ship and are advised to opt for JRF only in the application form. Candidates with M.Sc. qualification or under M.Sc.  Result Awaiting (RA) category shall be eligible for LS in the subjects except Engineering Sciences, subject to the eligibility criteria as laid down by the UGC.

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CSIR JRF NET Life Sciences December 2014 Question Paper & Answer Key with Explanations (1)

easybiologyclass, csir jrf net life sciences

CSIR/JRF/NET: Life Sciences, December 2014 (II):
Part B (Original Questions)


New: NET Life Sciences Dec 2015 Question Paper with Detailed Answer key

(1). Chirality of DNA is due to:

a. The bases
b. Base stacking
c. Hydrogen bonds between bases
d. Deoxyribose

Ans: d – Deoxyribose

Biomolecules like DNA, proteins, amino acids and sugars are chiral molecules.

(2). Proton motive force during oxidative phosphorylation is generated in mitochondria by:

a. Exchanging protons for sodium ions
b. Pumping protons out into inter-membrane space
c. Pumping hydroxyl ions into the mitochondria
d. Hydrolysis of ATP

Ans: c – Pumping protons out into inter-membrane space

During Electron Transport System (ETS) in the inner mitochondrial membrane, protons are pumped out of the mitochondrial matrix in to peri-mitochondrial space. This creates a concentration gradient of H+ ions between mitochondrial matrix and peri-mitochondrial space to have a proton-motive force. This proton-motive force will be later utilized by the ATP synthase enzyme to synthesize ATP. In chloroplasts, during light reaction of photosynthesis, the proton-motive force is created between inner thylakoid space and chloroplast matrix. Here also this proton-motive force will be later used by ATP synthase to produce ATP.

(For details: Voet and Voet, 2012, Fundamentals of Biochemistry, Ed. 4, Chapter 18, Electron Transport and Oxidative Phosphorylation, Page: 587)

Chemiosmotic theory: (proposed by Peter Mitchel, 1961): Free energy of electron transport is conserved by pumping H+ from the mitochondrial matrix to the inter-membrane space to create an electrochemical H+ gradient across the inner mitochondrial membrane. The electrochemical potential of this gradient is harnessed to synthesize ATP

(For details: Voet and Voet, 2012, Fundamentals of Biochemistry, Ed. 4, Chapter 18, Electron Transport and Oxidative Phosphorylation, Page: 604)

(3). In proteins, hydrogen bonds forms as follows: Donor (D)-H— Acceptor (A). Hydrogen bond is more favourable if the angle between D-H and A is:

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